The capped langur (Trachypithecus pileatus) is a species of primate in the family Cercopithecidae. It is found in Bangladesh, Bhutan, India, and Myanmar. They are arboreal and gregarious by nature. A herd of capped langur consists of 2 to 14 langurs led by a brawny male langur. They are herbivorous, ingesting leaves, twigs, buds and fruits.